Speed-regulating device for engines



(No Model.) 3 Sheets-Sheet 1.

C. W. BALDWIN.

SPEED REGULATING DEVICE EUR ENGINES. 180.868,448. Patented Aug. 16,1887.

3 Sheets--Sheet' 2.

(No Model.)

C. W. BALDWIN.

SPEED EEGULATING DEVICE 'EUR ENGINES.

Patented ug. 16, 1887.

N. PETERS. vnanwumagm'pngr, wmmgwn. D. c.

(No Model.) A 3 Sheets- Sheet 3.

C. W. BALDWIN.

SPEED REGULAIING DEVICE -ER ENGINES.

No. 368,443. Patented Aug. I6, 1887.

UNiTED STATES PATENT OFFICE.

OYRUS IV. BALDVIN, OF YONKERS, NEW YORK, ASSIGNOR TO VILLIAM E. HALE, OFCHICAGO, ILLINOIS.

SPEED-REG ULATING DEVICE FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 368,443, dated August16, 1887.

l Application filed August 19, 18E6. Serial No. 211,299. (No model.)

To all whom it may concern.-

Beit known that I, CYRUs W. BALDWIN, a citizen of the United States,residing at Yonkers, in the county of Vestchester and State of New York,have invented certain new and useful Improvements in Speed-RegulatingDevices for Engines, of which the following is a specification.

My invention relates to devices for regulating the speed of engines; andit consists of two heads revolved by the engine and a. disk connected tomove the engine-valve or other regulating device, and a governor wherebythe contact of the disk with one or other of the heads is determined bythe governor, and the regulation of the engine thus effected.

In the drawings, Figure l is aside elevation, in part section, ofsutlicient of a gasengine to illustrate the use of my speed-regulator inconnection therewith. Fig. 2 is a longitudinal section of a portion ofthe rear end of the working cylinder and adjacent valve-chamber. Fig. 3is an enlarged sectional plan of the speed-regulating devices. Fig. 4 isa longitudinal section on the line l 2, Fig. 3. Fig. 5 is a side view ofthe speed-regulating devices. FigfG is a section on the line 34, Fig. 1.Fig. 7 is a view illustrating a modiiication.

A represent-s a governor, which may be a ball-governor, as shown, or ofany other suitable construction. B is what Iterni a ""spool, consistingof a sleeve provided with two parallel circular heads or flanges, 9' l,or of such tlanges mounted upon a spindle, a, and preferably adjustablethereon.

In the construction shown the spindle a slides in a hollow portion ofthe governorshaft 3, to which are hung the arms carrying the usualballs, connecting-rods being jointed to the balls and to thegovernorvsleeve 4. A transverse pin, 5, lcarried by the sleeve 4, passesthrough a longitudinal slot, 6, in the governor shaft and through thespindle a, which is thus connected to move longitudinally with thesleeve.

The usual spring, 7, serves to force the sleeve outward until it isdrawn in by the movement ofthe balls. Between the heads j Z is arranged,upon a shaft, L', at right angles to the spindle, a disk, b, which, asshown, consists of two flat plates, between which is clamped a disk, ofrubber, leather, or other frictional material, which projects veryslightly beyond the edges of the plates, so as to make a frictional rimfor contact with the inner faces of the heads, and the latter arearranged at such a distance apart-slightly greater than the diameter ofthe disk b -that the disk may occupy a central position out of contactwith either head; but a very slight longitudinal movement of the spindlec will sufiice to bring one head or the other into contact with thedisk.

The governor-spindle is provided with a belt-pulley, 8, receiving abelt, or is otherwise geared to be revolved by the action of the engineto be governed, and the parts are so adjusted that when the engine isoperating at its proper speed the heads j Z will both be out of contactwith the disk b. Vhen thus arranged, an extremely slight increase ofspeed, causing the balls to ily out, will move inward the sleeve 4 andat once bring the head j into contact with the disk b, and will causethe latter to be at once revolved in the direction of its arrow; and anyreduction from the normal speed will carry the head Z into contact withthe disk Z1 and revolve the latter in an opposite direction. Thesemovements of the diskbare made the medium of altering the position ofthe governing-valve, shifting-bar, electrical switch, or other engineregulator, according to the character of the engine, and theintermediate devices for communicating motion from the disk to suchregulator maybe varied to a great extent.

The construction shown in the drawings is adapted for use with agas-engine, and in this case the shaft 7c is threaded at one point andthere 'passes through a nut, 9, pivotally supported by a bracketV, sothat a longitudinal movement will be imparted to the shaft in onedirection or the other, according to the direction in which it isturned, this longitudinal adjustment of the shaft altering the positionof the regulator.

To prevent the disk from continuously revolving after either head hasbeen brought into contact therewith, and until the position of the headis changed, I make the inner face of one head, j, convex or conical andthe in IOO ner [face of the head Zparallel therewith, or concave, asshown in Fig. 3. kIf the head j is brought against the edge of the diskb, it will be revolved until the shaft 7c, turning in its nut 9 in thedirection of its arrow, moves outward sufficiently to carry the edge ofthe disk b from contact with the conical face of the head, a slightmovement of the shaft effecting this result, so that the disk b isturned only a few revolutions sufficient to eff'ect a slight adjustmentof the regulator before it ceases its motion-the regulator thereforebeing altered in position only just enough to compensate for the slightincrease of speed. A like result ensues Vwhen the concave head Z isbrought against the disk; but if in either case the engine continuesto'accelerate or decreaseits motion one head or the other iscontinuously moved toward the disk 'to maintain contact therewith untilthe regulator is moved to the desired extent.

The head Z is -slightly larger inA diameter than the head j, and is alsoprovided with a recess, c, near its center or hub, so that if the head Zcontinues in contact with the disk b the latter will only turn until theregulator is at the limit of its position, whenl the disk will passopposite the recess o and will then stop. Inlike manner,'when the diskcontinues in contact with the head j, the disk will be turned until theregulator reaches the limit of its movement in the oppositedirection,when the motion of the disk will be arrested by its passingfrom contact with the head. By these means an extremely slight variationin the speed of the engine will at once turn the disk b inonei'directionor the other and change the position of theregulator-valve or other regu lating appliance; but no further movementof the latter will ensue unless the engine continues to increase ordecrease its speed.

Instead of altering the position ofthe spool in respect to the disk, thespool may have no longitudinal movement, andthe disk b may swing'betweenthe heads. One means of effecting this is shown in Fig. 7, and consistsin connecting the sleeve 4 to a sliding rod or spindle, a', carrying thenut 9.

lThe regulator inthe construction shown is a wedge, g, slotted for thepassage of the spindle 12` of the lift-valve h, which controls the flow'of the gaseous charge into the cylinder J Y of the engine, as set forthin the Letters Patent No. 325,378, issued to me September 1, 1885.

ln the construction shown-the wedge is carried at one end of a pivotedlever, c, carrying at the other end a pivoted bearing, 13, in which theend of the shaft k turps without sliding. rlhe wedge is curved tocorrespond to the arc of a circle having the pivot d of the lever o forits center.

The lever c consists of 'a sleeve or hub, 14, from which the two armsproject in opposite directions, the said sleeve turning on a pendentpintle, 16, supported by a bracket, 17,and

the lower end of the sleeve rests on a spiral spring, 18, supported by anut, e, on the pintle, whereby the wedge is kept up to its upper seat toprevent noise.

It will be obvious that the revolving heads and intermediate disk may beused with many different devices for relatively adjusting them undervarying speeds, as described, and that they may be employed in manydifferent connections.

The charge is admitted to the rear end of the cylinder and is compressedon the return movement of the piston, and when exploded actsiagainst andpropels the piston. When the piston passes and uncovers the outlet-porta, the spent charge passes out of the exhaust. rEhe ignition of thecharge results from separating the terminal yelectrodes within thecylinder in a manner notnecessary to be here described, as this andother features constitute the subject-matter of another'application forLetters Patent, Serial No. 194,353.

I do not here claim the combination of the parts described with agas-engine, as this will constitute the subject of a separateapplication for Letters Patent.

Without limiting myself to the precise construction and arrangement ofparts shown, I claimms 1. A speed-regulating device consisting of twoparallel revolving disks or heads driven by the engine, one larger thanthe other, a disk occupying a position between said heads and connectedto operate the engine-valve or other regulator, and a governor wherebyone or other of the heads is brought into frictional contact with saiddisk, according as the speed increases or decreases, substantially asset forth.

2. The combination, with the disk connected to operate the regulator, oftwo revolving heads on opposite sides of the disk, one greater indiameter than the other, and the latte`- recessed near the center, and agovernor for bringing the disk and entire head into contact, accordingas the speed of the engine must be increased or diminished,substantially as set forth.

3. The combination of the parallel revolving heads, one with a centralrecess, a disk arranged, between the heads, and a governor for shiftingthe parts according to the speed of the engine, substantially asdescribed.

4. The combination of athreaded shaft turning in a nut and carryingadisk, heads of different diameters carried by a revolving shaft drivenby the engine, and a governor whereby the contact of the disk with oneor other of the heads is insured upon a change of speed, substantiallyas described.

5. rI he combination of the sliding and revolving shaft connected to theregulating device of an engine and carrying a disk, revolving heads uponopposite sides of the shaft, one convex and the other concave, and agovernor and connections whereby the contact of the I i i i i ha.,

disk with one or other of the heads results upon a change of speed ofthe engine, substantially as described.

6. The combination of the heads revolved 5 by the engine, one convex andthe other con cave, a disk arranged between the heads, a threaded shaftcarrying the disk and passing through a nut, and connections between theshaft and the engine-regulating device, sub- Io stantially as described.7. The combination ofa shaft driven by an engine and carrying two headswith concave and curved faces, a governor for shifting the heads, ashaft carrying a disk arranged be- 15 tween the heads, and a nutsupportingthe shaft .substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two sub- 25 scribing witnesses.

CYRUS XV. BALDVIN. Vi tnesses:

JOHN C. HARRIGAN, WILLIAM RILEY.

